Conjure Arms

You touch a willing creature who has at least one free hand and a spectral martial weapon of your choice materializes in it. Ammunition is not created for weapons that require it. 

The target gains proficiency in the chosen weapon until end of duration. The weapon remains even if it is separated from the creature, but it doesn't grant proficiency to other creatures who try to wield it.  

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the weapon becomes a magic weapon with a +1 bonus to attack rolls and damage rolls. When you use a spell slot of 5th level or higher, the bonus increases to +2.